// Copyright (c) 2016 The Bitcoin Core developers
// Copyright (c) 2017-2019 The Raven Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#include "amount.h"
#include "policy/feerate.h"
#include "test/test_raven.h"

#include <boost/test/unit_test.hpp>

BOOST_FIXTURE_TEST_SUITE(amount_tests, BasicTestingSetup)

    BOOST_AUTO_TEST_CASE(Money_Range_Test)
    {
        BOOST_TEST_MESSAGE("Running Money Range Test");

        BOOST_CHECK_EQUAL(MoneyRange(CAmount(-1)), false);
        BOOST_CHECK_EQUAL(MoneyRange(MAX_MONEY + CAmount(1)), false);
        BOOST_CHECK_EQUAL(MoneyRange(CAmount(1)), true);
    }

    BOOST_AUTO_TEST_CASE(Get_Fee_Test)
    {
        BOOST_TEST_MESSAGE("Running Get Fee Test");

        CFeeRate feeRate, altFeeRate;

        feeRate = CFeeRate(0);
        // Must always return 0
        BOOST_CHECK_EQUAL(feeRate.GetFee(0), 0);
        BOOST_CHECK_EQUAL(feeRate.GetFee(1e5), 0);

        feeRate = CFeeRate(1000);
        // Must always just return the arg
        BOOST_CHECK_EQUAL(feeRate.GetFee(0), 0);
        BOOST_CHECK_EQUAL(feeRate.GetFee(1), 1);
        BOOST_CHECK_EQUAL(feeRate.GetFee(121), 121);
        BOOST_CHECK_EQUAL(feeRate.GetFee(999), 999);
        BOOST_CHECK_EQUAL(feeRate.GetFee(1e3), 1e3);
        BOOST_CHECK_EQUAL(feeRate.GetFee(9e3), 9e3);

        feeRate = CFeeRate(-1000);
        // Must always just return -1 * arg
        BOOST_CHECK_EQUAL(feeRate.GetFee(0), 0);
        BOOST_CHECK_EQUAL(feeRate.GetFee(1), -1);
        BOOST_CHECK_EQUAL(feeRate.GetFee(121), -121);
        BOOST_CHECK_EQUAL(feeRate.GetFee(999), -999);
        BOOST_CHECK_EQUAL(feeRate.GetFee(1e3), -1e3);
        BOOST_CHECK_EQUAL(feeRate.GetFee(9e3), -9e3);

        feeRate = CFeeRate(123);
        // Truncates the result, if not integer
        BOOST_CHECK_EQUAL(feeRate.GetFee(0), 0);
        BOOST_CHECK_EQUAL(feeRate.GetFee(8), 1); // Special case: returns 1 instead of 0
        BOOST_CHECK_EQUAL(feeRate.GetFee(9), 1);
        BOOST_CHECK_EQUAL(feeRate.GetFee(121), 14);
        BOOST_CHECK_EQUAL(feeRate.GetFee(122), 15);
        BOOST_CHECK_EQUAL(feeRate.GetFee(999), 122);
        BOOST_CHECK_EQUAL(feeRate.GetFee(1e3), 123);
        BOOST_CHECK_EQUAL(feeRate.GetFee(9e3), 1107);

        feeRate = CFeeRate(-123);
        // Truncates the result, if not integer
        BOOST_CHECK_EQUAL(feeRate.GetFee(0), 0);
        BOOST_CHECK_EQUAL(feeRate.GetFee(8), -1); // Special case: returns -1 instead of 0
        BOOST_CHECK_EQUAL(feeRate.GetFee(9), -1);

        // check alternate constructor
        feeRate = CFeeRate(1000);
        altFeeRate = CFeeRate(feeRate);
        BOOST_CHECK_EQUAL(feeRate.GetFee(100), altFeeRate.GetFee(100));

        // Check full constructor
        // default value
        BOOST_CHECK(CFeeRate(CAmount(-1), 1000) == CFeeRate(-1));
        BOOST_CHECK(CFeeRate(CAmount(0), 1000) == CFeeRate(0));
        BOOST_CHECK(CFeeRate(CAmount(1), 1000) == CFeeRate(1));
        // lost precision (can only resolve satoshis per kB)
        BOOST_CHECK(CFeeRate(CAmount(1), 1001) == CFeeRate(0));
        BOOST_CHECK(CFeeRate(CAmount(2), 1001) == CFeeRate(1));
        // some more integer checks
        BOOST_CHECK(CFeeRate(CAmount(26), 789) == CFeeRate(32));
        BOOST_CHECK(CFeeRate(CAmount(27), 789) == CFeeRate(34));
        // Maximum size in bytes, should not crash
        CFeeRate(MAX_MONEY, std::numeric_limits<size_t>::max() >> 1).GetFeePerK();
    }

    BOOST_AUTO_TEST_CASE(Binary_Operator_Test)
    {
        BOOST_TEST_MESSAGE("Running Binary Operator Test");

        CFeeRate a, b;
        a = CFeeRate(1);
        b = CFeeRate(2);
        BOOST_CHECK(a < b);
        BOOST_CHECK(b > a);
        BOOST_CHECK(a == a);
        BOOST_CHECK(a <= b);
        BOOST_CHECK(a <= a);
        BOOST_CHECK(b >= a);
        BOOST_CHECK(b >= b);
        // a should be 0.00000002 RVN/kB now
        a += a;
        BOOST_CHECK(a == b);
    }

    BOOST_AUTO_TEST_CASE(ToString_Test)
    {
        BOOST_TEST_MESSAGE("Running ToString Test");

        CFeeRate feeRate;
        feeRate = CFeeRate(1);
        BOOST_CHECK_EQUAL(feeRate.ToString(), "0.00000001 RVN/kB");
    }

BOOST_AUTO_TEST_SUITE_END()
